作者:ABHISHEK KUMAR 13 年以前
386
STP STATES
LISTENING
RECIEVE AND SEND BPDUs
INCOMING FRAMES ARE DROPPED BUT MAC-ADDRESS IS LEARNED
LEARNING
ADD MAC-ADDRESS
BLOCK
RECIEVE ONLY BPDUs
INCOMING FRAMES ARE FORWARDED
DISABLED
PORT IS SHUT DOWN
PORT ROLES
BLOCKING(in CST/PVST)
PORTS THAT ARE NEITHER ROOT NOR DESIGNATED
DESIGNATED(in both)
PORT ON A LAN SEGMENT CLOSEST TO ROOT
BACKUP(in RSTP)
REDUNDANT CONNECTION TO SEGMENT WHERE ANOTHER SWITCH PORT ALREADY EXISTS
ALTERNATE(in RSTP)
ALTERNATE PATH TO ROOT
ROOT PORT(in both)
BEST PATH COST TO ROOT
DISCARDING
INCOMING FRAMES ARE DROPPED, NO MAC-ADDRESS LEARNED
FORWARDING
SEND & RECIEVE DATA FRAMES
STP STATES & PORT ROLES
CST/PVST
RSTP